Makefile.am (libstdc++-symbols.ver): Only remove comment lines if they are at...

Makefile.am (libstdc++-symbols.ver): Only remove comment lines if they are at the beginning of lines (with optional...

	* src/Makefile.am (libstdc++-symbols.ver): Only remove comment lines
	if they are at the beginning of lines (with optional whitespace before
	#).
	* src/Makefile.in: Regenerated.

From-SVN: r184621