Simplify testing symbol sections

Simplify testing symbol sections

gcc/testsuite

	* lib/scanasm.exp (dg-scan): Extract file globbing code ...
	(dg_glob_remote): ... into this new procedure.
	(scan-assembler-symbol-section): Define.
	(scan-symbol-section): Define.
	* g++.dg/gomp/tls-5.C: Add symbol section test.
	* g++.dg/opt/const4.C: Likewise.
	* gcc.dg/20021029-1.c: Likewise.
	* gcc.dg/array-quals-1.c: Likewise.
	* gcc.dg/darwin-sections.c: Likewise.
	* gcc.dg/pr25376.c: Likewise.
	* gcc.test-framework/test-framework.exp: Load scanasm and test .S files.
	* gcc.test-framework/dg-scan-symbol-section-1-exp-F.S: New test.
	* gcc.test-framework/dg-scan-symbol-section-2-exp-F.S: New test.
	* gcc.test-framework/dg-scan-symbol-section-3-exp-F.S: New test.
	* gcc.test-framework/dg-scan-symbol-section-exp-P.S: New test.