Allow initializing wxScopedArray more conveniently.

Typical wxScopedArray initialization uses "new T[n]" expression, allow to omit
most of it and specify just n, the number of elements to allocate.

Use the new shorter form in the places where wxScopedArray(new ...) was used
(which is in almost all of them)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75504 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Use wxScopedArray instead of raw new[]/delete[] and fix memory leak.

Don't leak memory in case of error when reading from the stream in BMP loading
code.

Closes #15789.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75505 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Signed-off-by: Marian 'VooDooMan' Meravy <vdm113@gmail.com>

Conflicts:
	src/common/imagbmp.cpp
No real changes, just fix some typos in the comments.

Fix spelling in a couple of comments.

Closes #15790.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75506 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Mention horizontal scrolling in wxScrollBar documentation too.

Up/down can also mean left/right.

Closes #15791.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75507 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
patched for ICC

Signed-off-by: Marian 'VooDooMan' Meravy <vdm113@gmail.com>