(svn r7759) -Merge: makefile rewrite. This merge features:

- A proper ./configure, so everything needs to be configured only once, not for every make.
 - Usage of makedepend when available. This greatly reduces the time needed for generating the dependencies.
 - A generator for all project files. There is a single file with sources, which is used to generate Makefiles and the project files for MSVC.
 - Proper support for OSX universal binaries.
 - Object files for non-MSVC compiles are also placed in separate directories, making is faster to switch between debug and release compiles and it does not touch the directory with the source files.
 - Functionality to make a bundle of all needed files for for example a nightly or distribution of a binary with all needed GRFs and language files.

Note: as this merge moves almost all files, it is recommended to make a backup of your working copy before updating your working copy.

src/string.h

@@ -0,0 +1,114 @@
+/* $Id$ */
+
+#ifndef STRING_H
+#define STRING_H
+
+#include "macros.h"
+
+/*
+ * dst: destination buffer
+ * src: string to copy/concatenate
+ * size: size of the destination buffer
+ * usage: ttd_strlcpy(dst, src, lengthof(dst));
+ */
+void ttd_strlcat(char *dst, const char *src, size_t size);
+void ttd_strlcpy(char *dst, const char *src, size_t size);
+
+/*
+ * dst: destination buffer
+ * src: string to copy
+ * last: pointer to the last element in the dst array
+ *       if NULL no boundary check is performed
+ * returns a pointer to the terminating \0 in the destination buffer
+ * usage: strecpy(dst, src, lastof(dst));
+ */
+char* strecat(char* dst, const char* src, const char* last);
+char* strecpy(char* dst, const char* src, const char* last);
+
+char* CDECL str_fmt(const char* str, ...);
+
+/** Scans the string for valid characters and if it finds invalid ones,
+ * replaces them with a question mark '?' */
+void str_validate(char *str);
+
+/** Scans the string for colour codes and strips them */
+void str_strip_colours(char *str);
+
+/**
+ * Valid filter types for IsValidChar.
+ */
+typedef enum CharSetFilter {
+	CS_ALPHANUMERAL,      //! Both numeric and alphabetic and spaces and stuff
+	CS_NUMERAL,           //! Only numeric ones
+	CS_ALPHA,             //! Only alphabetic values
+} CharSetFilter;
+
+/** Convert the given string to lowercase, only works with ASCII! */
+void strtolower(char *str);
+
+
+/** Get the length of a string, within a limited buffer */
+static inline int ttd_strnlen(const char *str, int maxlen)
+{
+	const char *t;
+	for (t = str; *t != '\0' && t - str < maxlen; t++);
+	return t - str;
+}
+
+
+typedef uint32 WChar;
+
+/**
+ * Only allow certain keys. You can define the filter to be used. This makes
+ *  sure no invalid keys can get into an editbox, like BELL.
+ * @param key character to be checked
+ * @param afilter the filter to use
+ * @return true or false depending if the character is printable/valid or not
+ */
+bool IsValidChar(WChar key, CharSetFilter afilter);
+
+size_t Utf8Decode(WChar *c, const char *s);
+size_t Utf8Encode(char *buf, WChar c);
+
+
+static inline WChar Utf8Consume(const char **s)
+{
+	WChar c;
+	*s += Utf8Decode(&c, *s);
+	return c;
+}
+
+
+/** Return the length of a UTF-8 encoded character.
+ * @param c Unicode character.
+ * @return Length of UTF-8 encoding for character.
+ */
+static inline size_t Utf8CharLen(WChar c)
+{
+	if (c < 0x80)       return 1;
+	if (c < 0x800)      return 2;
+	if (c < 0x10000)    return 3;
+	if (c < 0x110000)   return 4;
+
+	/* Invalid valid, we encode as a '?' */
+	return 1;
+}
+
+
+/* Check if the given character is part of a UTF8 sequence */
+static inline bool IsUtf8Part(char c)
+{
+	return GB(c, 6, 2) == 2;
+}
+
+
+static inline bool IsPrintable(WChar c)
+{
+	if (c < 0x20)   return false;
+	if (c < 0xE000) return true;
+	if (c < 0xE200) return false;
+	return true;
+}
+
+
+#endif /* STRING_H */