Added msvcrt headers limits.h and math.h.

diff --git a/include/Makefile.in b/include/Makefile.in
index 274ccf3..7b94447 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -212,8 +212,10 @@
 	msvcrt/errno.h \
 	msvcrt/fcntl.h \
 	msvcrt/io.h \
+	msvcrt/limits.h \
 	msvcrt/locale.h \
 	msvcrt/malloc.h \
+	msvcrt/math.h \
 	msvcrt/mbctype.h \
 	msvcrt/mbstring.h \
 	msvcrt/process.h \
diff --git a/include/msvcrt/limits.h b/include/msvcrt/limits.h
new file mode 100644
index 0000000..fa310a5
--- /dev/null
+++ b/include/msvcrt/limits.h
@@ -0,0 +1,17 @@
+#ifndef __WINE_LIMITS_H
+#define __WINE_LIMITS_H
+
+#define INT_MAX  2147483647
+#define INT_MIN  (-2147483648)
+#define SHRT_MAX 32767
+#define SHRT_MIN (-32768)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __WINE_LIMITS_H */
diff --git a/include/msvcrt/math.h b/include/msvcrt/math.h
new file mode 100644
index 0000000..0cba867
--- /dev/null
+++ b/include/msvcrt/math.h
@@ -0,0 +1,12 @@
+#ifndef __WINE_MATH_H
+#define __WINE_MATH_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __WINE_MATH_H */