* libsupc++/Makefile.am (install-glibcppinstallHEADERS,

	uninstall-glibcppinstallHEADERS): Have explicit rules catering to
	SUN make VPATH peculiarities.
	* libsupc++/Makefile.in: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@42844 138bc75d-0d04-0410-961f-82ee72b054a4