Rename StringUtils.[ch] to XUtils.[ch]

XUtils.h

@@ -0,0 +1,45 @@
+#ifndef HEADER_XUtils
+#define HEADER_XUtils
+/*
+htop - StringUtils.h
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include <stdio.h>
+
+#include "Macros.h"
+
+
+#define String_startsWith(s, match) (strncmp((s),(match),strlen(match)) == 0)
+#define String_contains_i(s1, s2) (strcasestr(s1, s2) != NULL)
+
+/*
+ * String_startsWith gives better performance if strlen(match) can be computed
+ * at compile time (e.g. when they are immutable string literals). :)
+ */
+
+char* String_cat(const char* s1, const char* s2);
+
+char* String_trim(const char* in);
+
+int String_eq(const char* s1, const char* s2);
+
+char** String_split(const char* s, char sep, int* n);
+
+void String_freeArray(char** s);
+
+char* String_getToken(const char* line, const unsigned short int numMatch);
+
+char* String_readLine(FILE* fd);
+
+ATTR_FORMAT(printf, 2, 3)
+int xAsprintf(char **strp, const char* fmt, ...);
+
+ATTR_FORMAT(printf, 3, 4)
+int xSnprintf(char *buf, int len, const char* fmt, ...);
+
+char* xStrdup(const char* str) ATTR_NONNULL;
+
+#endif