From-SVN: r279813
From-SVN: r267494
From-SVN: r256169
2017-04-19 Martin Liska <mliska@suse.cz> PR gcov-profile/80435 * Makefile.in: Install gcov.h. * gcov.h: New file. * libgcov.h: Use the header and make __gcov_flush publicly visible. From-SVN: r246990