buildhistory.bbclass: Improve the generated depends.dot file
* Convert incorrectly formatted dependencies such as:
"bar -> "foo" ">=" "1.2.3"
into dependencies with edge labels:
"bar -> "foo" [label=">= 1.2.3"]
* Remove rpmlib() and config() dependencies such as:
"foo" -> "rpmlib(CompressedFileNames)" [label="<= 3.0.4-1"]
and:
"base-files" -> "config(base-files)" [label="= 3.0.14-r89.49"]
* Remove the trailing semicolon that was added to each line. It fills
no purpose.
Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>