[PATCH v2] msxml3: all string passed to IXMLDOMDocument_load() need to be URL-unescaped

[Damjan Jovanovic]

msxml3 allows URL escape sequences even for C:\ style paths.
eg. C:\Program%20Files...

Try 2 determines URL length dynamically, suppresses some compiler
const warnings, and cleans up tests.

Signed-off-by: Damjan Jovanovic 
---
 dlls/msxml3/bsc.c          | 33 ++++++++++++++++++++++++++++-----
 dlls/msxml3/tests/domdoc.c | 17 +++++++++++++++++
 2 files changed, 45 insertions(+), 5 deletions(-)