#18 Compilation with Dev-C++ (Orwell) and MinGW

[BilderVonFrüher]

The attached patched files consistute what I needed to change in order to compile with MinGW in Orwell Dev-C++.

Summary:

• 2 or 3 small C++ issues;
• Missing constant in MinGW's richedit.h
• Added -lcomctl32, -lcomdlg32 and -lgdi32

[DV]

Accepted (v0.5.9.9 dev).