Merged revision(s) 553-628 from branches/v3:

Inputs from TTCN-3 users added by STF471
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Update to user input, after compilation with another ttcn-3 compiler
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Deprecated module parameter group notation updated
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LibIMS update modifications extending to LibSIP
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More template restrictions for LibSIP_Templates
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Changed vc_route from template to template(omit).
Minor fix.
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Further fixes.
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STF471: Unifies templates (step1)
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STF471: Unifies templates (step2)
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STF471: Unifies templates (step3)
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STF471: Unifies templates (step4)
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LibSIP update:
* sizeof() -> lengthof()
* template restrictions added for template parameters where possible
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STF471: Unifies templates (step5)
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Merge rev. 565/566
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template restrictions added for LibSIP_SMS templates
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STF471: Unifies templates (step6)
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Changed vc_route_REG from template to template(omit).
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STF471: Add PIXITs templates
STF471: source formatting (step1)
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Further reduction of warnings.
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Updates for LibSip modification after compilation with another tool
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Replaced ispresent->isvalue in LibSIP
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Using template m_cSeq from SIP instead of local IMS one.
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move *.ttcn3view files to dedicated folder
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Merge with changes done by STF467
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Removed invalid group end.
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Introduced mw_Response_xxx_Base templates.
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Introduced mw_Response_StatusCode_Base.
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More template restrictions added where possible
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Initial formatting.
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Default parameter values added, where possible
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Initial ATS specific modulepar removal result
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Updated issues identified by T3Q 
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The rest of issues identified by T3Q
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Another round of PIXIT removal
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encoding attribute updated
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Merge code with STF467 (session week#12)
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Fixed compilation problems.
Calling f_selfOrClientSyncAndVerdict is now commented and needs to be checked!
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SipComponent now extends from SelfSyncComp to allow usage of LibCommon_Sync functionality.
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Container module importing all known LibSip modules in a public way, so the imports will be visible for all modules importing the LibSip_Library module.
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Removed explicit usage of PX_SIP_TACK, PX_SIP_TRESP as the component timer is implicitely initialized with the module parameter values.
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XSD files refreshed and common formatting applied
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sizeof->lengthof
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STF160 proposed modifications applied to LibSIP
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opaque param related TODO-s removed
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update of RFC3891 to separate mandatory callid from optional replacesParams
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add of file descriptions for t3doc
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add short descriptions for t3doc
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update of the file headers for STF471
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