Revert "configure: Fix --enable-XX-bit flags by moving LT_INIT where it should"

This reverts commit 2af28040d6.

The commit was resolving an issue where libtool will not setup the
environment correctly when one explicitly provides --enable-{32,64}-bit
at configure time. It was caused due to the "-m32,64" C{,XX}FLAGS being
set too late relative to LT_INIT.

At the same time this cases the enable_static to be incorrectly set,
amongst others leading to build issues. Rather than being smart and
trying to handle 32/64 bit build ourselves it may be better to delegate
it to the builder/maintainer. The latter should now know better which is
the correct(most appropriate) method.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82536
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82546
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Tested-by: Brian Paul <brianp@vmware.com>

configure.ac

@@ -57,6 +57,9 @@ AC_CHECK_PROGS([PYTHON2], [python2 python])
 AC_PROG_SED
 AC_PROG_MKDIR_P
 
+LT_PREREQ([2.2])
+LT_INIT([disable-static])
+
 AX_PROG_BISON([],
               AS_IF([test ! -f "$srcdir/src/glsl/glcpp/glcpp-parse.c"],
                     [AC_MSG_ERROR([bison not found - unable to compile glcpp-parse.y])]))
@@ -2190,14 +2193,6 @@ dnl Add user CFLAGS and CXXFLAGS
 CFLAGS="$CFLAGS $USER_CFLAGS"
 CXXFLAGS="$CXXFLAGS $USER_CXXFLAGS"
 
-dnl
-dnl LT_INIT adds tests to determine host based on some variables like (AM_)C(XX)FLAGS and (AM_)LDFLAGS.
-dnl They need to be set before calling LT_INIT so the macro can configure things correctly when cross_compiling.
-dnl This will allow --enable-xx-bit to work as expected.
-dnl
-LT_PREREQ([2.2])
-LT_INIT([disable-static])
-
 dnl Substitute the config
 AC_CONFIG_FILES([Makefile
 		src/Makefile