https://issues.dlang.org/show_bug.cgi?id=24692

          Issue ID: 24692
           Summary: ImportC fails when DMD is installed in path with
                    spaces
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: critical
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: elpenguino+D@gmail.com

Sample code:

hello.c
```
int main() { return 0; }
```

When DMD is installed to a path with spaces in it, an error similar to the
following is produced:
```
hello.c: fatal error C1083: Cannot open include file: 'C:\Program': No such
file or directory
c1: fatal error C1083: Cannot open source file:
'Files\D\dmd2\windows\bin64\..\..\src\druntime\import\importc.h': No such file
or directory
```

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