Added following static functions:
bool file_is_readable(char*)
bool file_is_writable(char)
void usage(void)
char* get_expanded_pathname(char*, char*, char*)
void print_log_n_stderr(bool, bool, char*, char*, int)
bool resolve_maxscale_conf_fname(char**, char*, char*)
bool resolve_maxscale_homedir(char**)
Added new command-line argument '-f' which allows the user for specifying relative, or absolute pathname for configuration file. It is also possible to specify only a file name which will be concatenated to path held in MAXSCALE_HOME environment variable.
Old command-line parameter '-c' allow the user for specifying MaxScale home directory also as relative or absolute path. Relative path will be expanded before tested for readability and for writeability.
6d0d85396e