make bootstrap fails when compiling editfns.c and fileio.c

[martin rudalics]

Recent changes to `editfns.c' (and `fileio.c') let `make bootstrap' fail
with mingw.

gcc -I. -DWIN32_LEAN_AND_MEAN -D_WIN32_WINNT=0x0400 -D_X86_=1 -c -g 
-march=i686 -O2  -Di386 -D_CRTAPI1=_cdecl   -Demacs=1 -DWINDOWSNT 
-DDOS_NT -DHAVE_CONFIG_H -I../nt/inc -D_UCHAR_T -DHAVE_NTGUI=1 
-DUSE_CRT_DLL=1 -DPURESIZE=5000000 -o oo-spd/i386/editfns.o editfns.c
editfns.c: In function `init_editfns':
editfns.c:146: error: dereferencing pointer to incomplete type
editfns.c:161: error: dereferencing pointer to incomplete type
editfns.c: In function `Fuser_login_name':
editfns.c:1254: error: dereferencing pointer to incomplete type
editfns.c: In function `Fuser_full_name':
editfns.c:1307: error: `uid_t' undeclared (first use in this function)
editfns.c:1307: error: (Each undeclared identifier is reported only once
editfns.c:1307: error: for each function it appears in.)
editfns.c:1307: error: syntax error before "extract_float"
editfns.c:1316: error: dereferencing pointer to incomplete type
make[2]: *** [oo-spd/i386/editfns.o] Error 1
make[2]: Leaving directory `C:/emacs-22.1/src'
make[1]: *** [bootstrap-temacs] Error 2
make[1]: Leaving directory `C:/emacs-22.1/src'
make: *** [bootstrap-gmake] Error 2