Alter path sanity check to allow PATH lookup, rather than requiring

absolute paths.

(partial cherrypick from b35ddbf)

mythtv/bindings/python/MythTV/static.py

@@ -4,7 +4,7 @@
 Contains any static and global variables for MythTV Python Bindings
 """
 
-OWN_VERSION = (0,24,0,1)
+OWN_VERSION = (0,24,0,2)
 SCHEMA_VERSION = 1264
 MVSCHEMA_VERSION = 1038
 NVSCHEMA_VERSION = 1007

mythtv/bindings/python/MythTV/system.py

@@ -36,8 +36,21 @@ def __init__(self, path=None, setting=None, db=None):
             if path is None:
                 raise MythError('Invalid input to System()')
             self.path = path
-        if not os.access(self.path, os.F_OK):
-            raise MythFileError('Defined grabber path does not exist.')
+
+        cmd = self.path.split()[0]
+        if self.path.startswith('/'):
+            # test full given path
+            if not os.access(cmd, os.F_OK):
+                raise MythFileError('Defined executable path does not exist.')
+        else:
+            # search command from PATH
+            for folder in os.environ['PATH'].split(':'):
+                if os.access(os.path.join(folder,cmd), os.F_OK):
+                    self.path = os.path.join(folder,self.path)
+                    break
+            else:
+                raise MythFileError('Defined executable path does not exist.')
+
         self.returncode = 0
         self.stderr = ''