[autofit] Fix Savannah bug #41138, part 1.

* src/tools/afblue.pl <Handling #endif>: Produce correct auxiliary
enumeration names for generated `#else'.

* src/autofit/afblue.h: Regenerated.
[arm] Fix Savannah bug #41138, part 2.

* builds/unix/ftconfig.in (FT_MulFix_arm), include/config/ftconfig.h
(FT_MulFix_arm), src/truetype/ttinterp.c (TT_MulFix14_arm): Fix
preprocessor conditionals for `add.w'.
Fix Savannah bug #41158.

* builds/unix/install.mk (install): Create man page directory.