Isolate khash inlines from global namespace

khash.h was globally #define'ing "inline" which messes with
other files.  Let's keep it as "kh_inline".

src/khash.h

@@ -131,7 +131,9 @@ typedef unsigned long long khint64_t;
 #endif
 
 #ifdef _MSC_VER
-#define inline __inline
+#define kh_inline __inline
+#else
+#define kh_inline inline
 #endif
 
 typedef khint32_t khint_t;
@@ -345,7 +347,7 @@ static const double __ac_HASH_UPPER = 0.77;
 	__KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
 
 #define KHASH_INIT(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
-	KHASH_INIT2(name, static inline, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
+	KHASH_INIT2(name, static kh_inline, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
 
 /* --- BEGIN OF HASH FUNCTIONS --- */
 
@@ -374,7 +376,7 @@ static const double __ac_HASH_UPPER = 0.77;
   @param  s     Pointer to a null terminated string
   @return       The hash value
  */
-static inline khint_t __ac_X31_hash_string(const char *s)
+static kh_inline khint_t __ac_X31_hash_string(const char *s)
 {
 	khint_t h = (khint_t)*s;
 	if (h) for (++s ; *s; ++s) h = (h << 5) - h + (khint_t)*s;
@@ -391,7 +393,7 @@ static inline khint_t __ac_X31_hash_string(const char *s)
  */
 #define kh_str_hash_equal(a, b) (strcmp(a, b) == 0)
 
-static inline khint_t __ac_Wang_hash(khint_t key)
+static kh_inline khint_t __ac_Wang_hash(khint_t key)
 {
     key += ~(key << 15);
     key ^=  (key >> 10);

src/submodule.c

@@ -31,7 +31,7 @@ static git_cvar_map _sm_ignore_map[] = {
 	{GIT_CVAR_STRING, "none", GIT_SUBMODULE_IGNORE_NONE}
 };
 
-static inline khint_t str_hash_no_trailing_slash(const char *s)
+static kh_inline khint_t str_hash_no_trailing_slash(const char *s)
 {
 	khint_t h;
 
@@ -42,7 +42,7 @@ static inline khint_t str_hash_no_trailing_slash(const char *s)
 	return h;
 }
 
-static inline int str_equal_no_trailing_slash(const char *a, const char *b)
+static kh_inline int str_equal_no_trailing_slash(const char *a, const char *b)
 {
 	size_t alen = a ? strlen(a) : 0;
 	size_t blen = b ? strlen(b) : 0;
@@ -55,7 +55,7 @@ static inline int str_equal_no_trailing_slash(const char *a, const char *b)
 	return (alen == blen && strncmp(a, b, alen) == 0);
 }
 
-__KHASH_IMPL(str, static inline, const char *, void *, 1, str_hash_no_trailing_slash, str_equal_no_trailing_slash);
+__KHASH_IMPL(str, static kh_inline, const char *, void *, 1, str_hash_no_trailing_slash, str_equal_no_trailing_slash);
 
 static git_submodule *submodule_alloc(const char *name)
 {