configure.ac: strict is disabled by default

Use --enable-strict to use it.
Warnings will not stop the compilation, by default.

configure.ac

@@ -402,15 +402,15 @@ if test x$use_filter = xyes; then
  PCSCLITE_FEATURES="${PCSCLITE_FEATURES} filter"
 fi
 
-# --disable-strict
+# --enable-strict
 AC_ARG_ENABLE(
  [strict],
- [AS_HELP_STRING([--disable-strict],[disable strict compile mode @<:@enabled@:>@])],
+ [AS_HELP_STRING([--enable-strict],[enable strict compile mode @<:@enabled@:>@])],
  ,
- [enable_strict="yes"]
+ [enable_strict="no"]
 )
 if test "${enable_strict}" = "yes"; then
- CFLAGS="-Wall -Wextra -Wno-unused-parameter -Werror ${CFLAGS}"
+ CFLAGS="-Wall -Wextra -Werror ${CFLAGS}"
 fi
 
 # Setup dist stuff