* Fix "end of file while inside a group" doxygen warnings.
* Fix "unknown command" doxygen warnings caused by incorrect
argument references. Instead of `@foo`, `@a foo` is the proper
format.
* Fix "unknown command" doxygen warnings caused by incorrect
parameter direction specifications. Instead of `@in`, `@out`,
and `@in-out`, `[in]`, `[out]`, and `[in,out]` are the proper
formats.
* Wrapping special characters in quotes to avoid doxygen
confusion. Raw pipe, semicolon, dot, backslash, etc. characters
can drive doxygen into various misinterpretations and warnings.
E.g.:
```
End of list marker found without any preceding list items
Found unknown command
```
Putting quotes around such text snipets eliminates the errors.
* Fix the documentation of `ecma_builtin_global_object_print`. Raw
<> and \ sequences confused doxygen in various ways (it tried to
interpret them as XML tags and doxygen commands).
* Fix "ignoring title that does not match old title" doxygen
warnings. At some places, the group titles were out of sync, at
others, the group names were incorrect.
* Fix "parameters are not documented" doxygen warnings. Fixing
various typos in the inline parameter documentations (`/*`,
`/**`, `/** <`, and `/**>` are all considered incorrect, the
right format is `/**<`).
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
