Fix i686 bootstrap by temporarily disabling exporting of global ranges.

The patch converting evrp to the get_range_query(fun) API broke i686
bootstrap (commit 57bf3751).  The problem seems to be in a subsequent
pass that has more up-to-date global ranges.  I won't be able to look at
this until next week, so I am reverting the problematic bit of the
patch-- the exporting of global ranges once evrp finishes.  The use of
the new API remains.

Reverting the behavior shouldn't be a problem as we never used to export
global ranges from ranger.  This was new behavior in the patchset.

Tested on x86-64 Linux with a bootstrap and regtest, and on x86-32 with
only a bootstrap and the configure flags from the PR:

--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-languages=c,c++ --enable-cet i686-linux --enable-bootstrap --with-fpmath=sse --disable-libcc1 --disable-libcilkrts --disable-libsanitizer

gcc/ChangeLog:

	PR tree-optimization/100787
	* gimple-ssa-evrp.c: Disable exporting of global ranges.

gcc/testsuite/ChangeLog:

	* gcc.dg/Wstringop-overflow-55.c:
	* gcc.dg/pr80776-1.c: