compile the library file strequal.c to get the Curl_raw_equal function as

that's not exported by the lib

src/Makefile.inc

@@ -3,7 +3,8 @@
 # libcurl has sources that provide functions named curlx_* that aren't part of
 # the official API, but we re-use the code here to avoid duplication.
 CURLX_ONES =  $(top_srcdir)/lib/strtoofft.c \
-	$(top_srcdir)/lib/strdup.c 
+	$(top_srcdir)/lib/strdup.c \
+	$(top_srcdir)/lib/strequal.c 
 
 CURL_SOURCES = main.c hugehelp.c urlglob.c writeout.c writeenv.c \
 	getpass.c homedir.c curlutil.c