uncrustify.cfg: label indent, some known types, not, # and ##

Adjusted some uncrustify variables to get closer to prevailing style:

* Label indent (for goto) relative to current indentation.
* Registered GMimeObject and mime_node_t being as types.
* Space after ! (not) operator.
* No space after 'stringify' (#) preprosessor token.
* No spacing change around ## (option not versatile enough).

There are at least 3 cases where attention needs to be paid:

* If there is newline between function name and open paren in function
  call, the paren (and args) are indented too far right.
* #define HOUR (60 *MINUTE) -- i.e. no space after star (*).
* void (*foo)(args) -- i.e no space between (name) and (args).

devel/uncrustify.cfg

@@ -16,8 +16,7 @@ input_tab_size		= 8		# original tab size
 output_tab_size		= 8		# new tab size
 indent_columns		= 4
 
-indent_label		= 2		# pos: absolute col, neg: relative column
-
+indent_label		= -2		# pos: absolute col, neg: relative column
 
 #
 # inter-symbol newlines
@@ -55,6 +54,11 @@ nl_after_struct = 0
 # mod_full_brace_do	= remove	# "do a--; while ();" vs "do { a--; } while ();"
 # mod_full_brace_while	= remove	# "while (a) a--;" vs "while (a) { a--; }"
 
+#
+# Extra types used in notmuch source.
+# (add more on demand)
+
+type GMimeObject mime_node_t
 
 #
 # inter-character spacing options
@@ -63,6 +67,9 @@ nl_after_struct = 0
 sp_before_ptr_star	= force
 sp_between_ptr_star	= remove
 sp_after_ptr_star	= remove
+sp_not			= force
+sp_pp_concat		= ignore	# XXX 'remove' drops leading space also
+sp_pp_stringify		= remove
 
 # sp _return_paren	= force		# "return (1);" vs "return(1);"
 sp_sizeof_paren		= force		# "sizeof (int)" vs "sizeof(int)"