- build optional binaries (bnc#637453)

- update to 1.15.2
* Use automake to build translations.
* loadkeys -u: Switch to Unicode mode, if necessary
* Never handle plain ASCII characters as Unicode
* Enable UNUMBERs in compose definitions
* Use automake.
* Add --enable-strip configure option.
* unicode_start: Without any arguments utility will only set
unicode mode.
* Add qwerty/cz.map keymap.
- remove upstreamed and obsolete patches (-remove-kbio, -Makefile,
-2d01989f, -no-strip)
- retain original behavior of unicode_start script
- remove manpages for programs that are not installed