Fix several cmake build problems
Fix several cmake build problems

The following issues are fixed:
*   `make clean' in in tree build does not remove pinyin.tab, swkb.dat,
    symbols.dat now.
*   phoneid.dic is removed during build process.
*   `make install' now installs pinyin.tab, swkb.dat, symbols.dat.

Closed #67

chewing/libchewing,kito-cheng/libchewing,cwlin/libchewing,ShengYenPeng/libchewing,simonfork/libchewing,simonfork/libchewing,PingNote/libchewing,Chocobo1/libchewing,Chocobo1/libchewing,dimotsai/libchewing,kito-cheng/libchewing,robert501128/libchewing,Chocobo1/libchewing,robert501128/libchewing,czchen/libchewing,dimotsai/libchewing,bbyykk/libtaigi,ShengYenPeng/libchewing,hiunnhue/libchewing,Chocobo1/libchewing,chewing/libchewing,bbyykk/libtaigi,ShengYenPeng/libchewing,ShengYenPeng/libchewing,robert501128/libchewing,simonfork/libchewing,PeterDaveHello/libchewing,hiunnhue/libchewing,czchen/libchewing,yan12125/libchewing,czchen/libchewing,chewing/libchewing,simonfork/libchewing,hiunnhue/libchewing,bbyykk/libtaigi,kito-cheng/libchewing,hiunnhue/libchewing,dimotsai/libchewing,mangokingTW/libchewing,PingNote/libchewing,czchen/libchewing,dimotsai/libchewing,cwlin/libchewing,mangokingTW/libchewing,hiunnhue/libchewing,cwlin/libchewing,chewing/libchewing,yan12125/libchewing,yan12125/libchewing,mangokingTW/libchewing,yan12125/libchewing,kito-cheng/libchewing,PingNote/libchewing,PingNote/libchewing,bbyykk/libtaigi,PeterDaveHello/libchewing,mangokingTW/libchewing,Chocobo1/libchewing,cwlin/libchewing,PeterDaveHello/libchewing,robert501128/libchewing,cwlin/libchewing,PeterDaveHello/libchewing,bbyykk/libtaigi