Merge branch 'maint'

* maint:
  warnings: introduce -Wdeprecated in the usage info
  errors: prefix the output with "error: "
  errors: indent "invalid value for %define" context
  errors: indent "%define var" redefinition context
  errors: indent "symbol redeclaration" context
  errors: indent "result type clash" error context

Conflicts:
	src/complain.c
	src/muscle-tab.c
	src/reader.c
	src/symtab.c
	tests/conflicts.at
	tests/input.at
	tests/named-refs.at
	tests/output.at
	tests/skeletons.at

THANKS

@@ -104,6 +104,7 @@ Shura                     [email protected]
 Stefano Lattarini         [email protected]
 Steve Murphy              [email protected]
 Sum Wu                    [email protected]
+Théophile Ranquet         [email protected]
 Thiru Ramakrishnan        [email protected]
 Tim Josling               [email protected]
 Tim Landscheidt           [email protected]
@@ -127,6 +128,7 @@ thank them!  Please, help us keeping this list up to date.
 
 Local Variables:
 mode: text
+coding: utf-8
 End:
 
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