bug in cygwin_conv_to_posix_path() caused by period in win32 path

[Pavel Kudrna <Pavel dot Kudrna at mff dot cuni dot cz>]

Hi,
the legal win32 paths containing period like "c:.\" or "c:." are 
incorrectly converted by
cygwin_conv_to_posix_path() to "c:./" and "c:." respectively. See last 
two output
lines of the attached example program.
Pavel Kudrna

/* file: parameters.c
*/
#include <stdio.h>
#include <windows.h>
int main()
{
int i;
char posix_buffer[MAX_PATH];
char *win32_path[]={ "c:\\",
                     "c:",
                     "c:\\.\\",
                     "c:\\.",
                     "c:.\\",
                     "c:.",
                     NULL
                   };
for(i=0;win32_path[i];i++)
{
 cygwin_conv_to_posix_path(win32_path[i], posix_buffer);
 printf( "%s\t" "%s\n", win32_path[i], posix_buffer );
}
return 0;
}

$ gcc -o parameters parameters.c

$ ./parameters
c:\     /cygdrive/c
c:      /cygdrive/c
c:\.\   /cygdrive/c/
c:\.    /cygdrive/c
c:.\    c:./
c:.     c:.

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