better error messages: use <T1, T2> instead of (T1, T2) in order to prevent confusions with tuple types

tests/errmsgs/t4756.nim

@@ -1,5 +1,5 @@
 discard """
-errormsg: "type mismatch: got (string, arr: seq[empty])"
+errormsg: "type mismatch: got <string, arr: seq[empty]>"
 line: 15
 """
 

tests/errmsgs/t5167_4.nim

@@ -1,5 +1,5 @@
 discard """
-errormsg: "type mismatch: got (proc [*missing parameters*](x: int) | proc (x: string){.gcsafe, locks: 0.})"
+errormsg: "type mismatch: got <proc [*missing parameters*](x: int) | proc (x: string){.gcsafe, locks: 0.}>"
 line: 19
 """
 

tests/errmsgs/tconceptconstraint.nim

@@ -2,15 +2,15 @@ discard """
   errormsg: "cannot instantiate B"
   line: 20
   nimout: '''
-got: (type string)
-but expected: (T: A)
+got: <type string>
+but expected: <T: A>
 '''
 """
 
 type
   A = concept c
     advance(c)
-  
+
   B[T: A] = object
     child: ref B[T]
 

tests/errmsgs/tdetailed_position.nim

@@ -1,13 +1,13 @@
 
 discard """
 cmd: "nim check $file"
-errormsg: "type mismatch: got (int literal(1), int literal(2), int literal(3))"
+errormsg: "type mismatch: got <int literal(1), int literal(2), int literal(3)>"
 nimout: '''
 but expected one of:
 proc main(a, b, c: string)
-first type mismatch at position: 1
-required type: string
-but expression '1' is of type: int literal(1)
+  first type mismatch at position: 1
+  required type: string
+  but expression '1' is of type: int literal(1)
 
 expression: main(1, 2, 3)
 '''

tests/errmsgs/tgenericconstraint.nim

@@ -2,8 +2,8 @@ discard """
   errormsg: "cannot instantiate B"
   line: 14
   nimout: '''
-got: (type int)
-but expected: (T: string or float)
+got: <type int>
+but expected: <T: string or float>
 '''
 """
 

tests/errmsgs/tmake_tuple_visible.nim

@@ -1,7 +1,7 @@
 discard """
-  errormsg: '''got (tuple of (type NimEdAppWindow, int))'''
+  errormsg: '''got <tuple of (type NimEdAppWindow, int)>'''
   line: 22
-  nimout: '''got (tuple of (type NimEdAppWindow, int))
+  nimout: '''got <tuple of (type NimEdAppWindow, int)>
 but expected one of:
 template xxx(tn: typedesc; i: int)'''
 """

tests/errmsgs/tshow_asgn.nim

@@ -1,5 +1,5 @@
 discard """
-  errormsg: "type mismatch: got (int) but expected 'cshort = int16'"
+  errormsg: "type mismatch: got <int> but expected 'cshort = int16'"
   line: 12
   column: 10
   file: "tshow_asgn.nim"