[Issue 20003] New: change option text for betterC

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20003

          Issue ID: 20003
           Summary: change option text for betterC
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: visuald
          Assignee: nobody at puremagic.com
          Reporter: black80 at bk.ru

for now it is "omit generating some runtime information and helper functions"
well, it looks like decrease EXE size for me.
people reads blogs about betterC, when they want use it, they looks such
option, so why it should be so much hidden and meanless?
rename it to "betterC"

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