Fix to install manpage as part of 'make install' by Uwe Hermann <uwe@hermann-uwe.de>

git-svn-id: svn://svn.berlios.de/openocd/trunk@1335 b42882b7-edfa-0310-969c-e2dbd0fdcd60

doc/Makefile.am

 info_TEXINFOS = openocd.texi
 openocd_TEXINFOS = fdl.texi
+man_MANS = openocd.1
+EXTRA_DIST = openocd.1