Add memdump view along variables

[alex1632]

This pull request adds a mighty feature to sublimeGDB, i.e. memory dumps just as you would get with x/x in GDB. The changed bytes are highlighted, and the memdump detects whether an expression goes out of scope. Also, you can predefine memdumps in your project file to re-appear once you restart debugging.

Example: "sublimegdb_memdumps": [ { "exp": "c", "words": 12, "wordlen": 1 }]

Also, the radix of a variable can be changed live in the GDB Variables window by right clicking on the variable and selecting the "Set variable format" command.

[alex1632]

That's what it looks like.