Resolve non-absolute values of CGIPaths relative to DocBase. Closes #24.

README.md

@@ -319,7 +319,8 @@ startup, database connection etc. on each request).
   single non-separator character and `*` matches a sequence of them -
   if wildcards are used, the path should *not* end in a trailing slash
   - this appears to be a peculiarity of the Go standard library's
-  `filepath.Glob` function.
+  `filepath.Glob` function.  Any non-absolute paths will be resolved
+  relative to `DocBase`.
 * `SCGIPaths`: In this section of the config file, keys are URL path
   prefixes and values are filesystem paths to unix domain sockets.
   Any request for a URL whose path begins with one of the specified

config.go

@@ -92,6 +92,13 @@ func getConfig(filename string) (Config, error) {
 		return config, errors.New("Invalid DirectorySort value.")
 	}
 
+	// Absolutise CGI paths
+	for index, cgiPath := range config.CGIPaths {
+		if(!filepath.IsAbs(cgiPath)) {
+			config.CGIPaths[index] = filepath.Join(config.DocBase, cgiPath)
+		}
+	}
+
 	// Expand CGI paths
 	var cgiPaths []string
 	for _, cgiPath := range config.CGIPaths {