package/mfgtools: bump to 0.02

package/mfgtools: bump to 0.02

Bump mfgtools to include the fix [1] for the C++ build issue reported
by the autobuilders.

This bump include only 4 small commits fixing memory leak and this
build issue.

Remove CPOL.htm (removed upstream) from MFGTOOLS_LICENSE_FILES but CPOL
license is still valid.
Add the README.txt file to MFGTOOLS_LICENSE_FILES since it contains
licensing informations:

Licenses:
- CPOL: MfgToolLib/XmlLite.CPP and XmlLite.h
- BSD: Others.

Add license file hash.

[1] https://github.com/codeauroraforum/mfgtools/commit/b370a43e548440025d274ff2abbb25342bbaa78c

Fixes:
http://autobuild.buildroot.net/results/7c2bbbe13ab315684f3502afd96958a76879b1d5

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 34c4c0680a6de06e8c11e7361c26c8594315ba36)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>