Cygwin support (#15)

* Add .gitignore for most untracked files associated with automake

* Add include gards

* Add checks for CygWin to fix gaps in cygwin build. uint is not defined in CygWin and M_PI needs additional defines to expose.

.gitignore

@@ -0,0 +1,20 @@
+Makefile
+Makefile.in
+aclocal.m4
+/autom4te.cache/
+/config.*
+/configure
+/depcomp
+/install-sh
+/libtool
+/ltmain.sh
+/m4/
+/missing
+/stamp-h?
+.deps/
+.dirstamp
+.libs/
+*.l[ao]
+*.o
+*~
+*.bak

include/dieharder/copyright.h

@@ -1,3 +1,5 @@
+#ifndef _DIEHARDER_COPYRIGHT_H_
+#define _DIEHARDER_COPYRIGHT_H_
 /*
  * $Id: copyright.h 222 2006-08-17 04:54:59Z rgb $
  *
@@ -14,4 +16,4 @@
  * PERFORMANCE OF THIS SOFTWARE.
  *
  */
-
+#endif /* _DIEHARDER_COPYRIGHT_H_ */

include/dieharder/libdieharder.h

@@ -1,3 +1,6 @@
+#ifndef _LIBDIEHARDER_H_
+#define _LIBDIEHARDER_H_
+
 /*
  *========================================================================
  * See copyright in copyright.h and the accompanying file COPYING
@@ -26,7 +29,15 @@
 
 /* This turns on M_PI in math.h */
 #define __USE_BSD 1
+#ifdef __CYGWIN__
+#undef __BSD_VISIBLE
+#define __BSD_VISIBLE 1
+#endif /* __CYGWIN__ */
 #include <math.h>
+#ifdef __CYGWIN__
+#undef __BSD_VISIBLE
+#define __BSD_VISIBLE 0
+#endif /* __CYGWIN__ */
 #include <limits.h>
 #include <gsl/gsl_rng.h>
 #include <gsl/gsl_randist.h>
@@ -301,3 +312,7 @@ typedef struct {
   double c[RGB_MINIMUM_DISTANCE_MAXDIM];
 } dTuple;
 
+#ifdef __CYGWIN__
+typedef       unsigned int    uint;
+#endif /* __CYGWIN__ */
+#endif /* _LIBDIEHARDER_H_ */