Introduce integer comparison support in RewriteCond

The operators -gt, -ge, -eq, -le, -lt and -ne follow the bash test' semantics
for comparing the integer values of the lhs and rhs expressions, as opposed
to the string evaluations performed by > >= = <= and <.

Note that -lt and -le overlap the existing -l test, and could be confused in
expresions such as -ltestfile - to avoid this conflict use -L or -h in place
of the legacy -l file symlink test operator.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@997878 13f79535-47bb-0310-9956-ffa450edef68