Pretty printers: Unify code for different allocators

The code path for allocators other than
'std::allocator' does work for 'std::allocator' as well,
so unify this.

This also fixes the case of std containers when
'std::allocator' is used and the compiler flag
'-D_GLIBCXX_DEBUG' in place which results in size assumptions
that were made in the now dropped path to not be fulfilled,
thus leading to an incorrect display.

Fixes: QTCREATORBUG-22606
Change-Id: I2b6f8ac9933b210d26197975017292e2fc227541
Reviewed-by: hjk <hjk@qt.io>

share/qtcreator/debugger/stdtypes.py

@@ -953,24 +953,11 @@ def qdumpHelper__std__vector(d, value, isLibCpp):
     innerType = value.type[0]
     isBool = innerType.name == 'bool'
 
-    try:
-        allocator = value.type[1].name
-    except:
-        allocator = ''
-
-    isStdAllocator = allocator == 'std::allocator<%s>' % innerType.name
-
     if isBool:
         if isLibCpp:
-            if isStdAllocator:
-                (start, size) = value.split("pp")  # start is 'unsigned long *'
-            else:
             start = value["__begin_"].pointer()
             size = value["__size_"]
             alloc = size
-        else:
-            if isStdAllocator:
-                (start, soffset, pad, finish, foffset, pad, alloc) = value.split("pI@pI@p")
         else:
             start = value["_M_start"]["_M_p"].pointer()
             soffset = value["_M_start"]["_M_offset"].integer()
@@ -978,9 +965,6 @@ def qdumpHelper__std__vector(d, value, isLibCpp):
             foffset = value["_M_finish"]["_M_offset"].integer()
             alloc = value["_M_end_of_storage"].pointer()
             size = (finish - start) * 8 + foffset - soffset # 8 is CHAR_BIT.
-    else:
-        if isStdAllocator:
-            (start, finish, alloc) = value.split("ppp")
     else:
         if isLibCpp:
             start = value["__begin_"].pointer()
@@ -1087,13 +1071,6 @@ def qdump__std__basic_string(d, value):
 
 def qdump__std____cxx11__basic_string(d, value):
     innerType = value.type[0]
-    try:
-        allocator = value.type[2].name
-    except:
-        allocator = ''
-    if allocator == 'std::allocator<%s>' % innerType.name:
-        (data, size) = value.split("pI")
-    else:
     try:
         data = value["_M_dataplus"]["_M_p"].pointer()
         size = int(value["_M_string_length"])