3D Floor Mode: fixed a problem where the previous state of linedef arguments were not preserved for undo snapshots. Fixes #967

Script Editor: fixed a crash when the find/replace dialog was opened and the previously selected script tabs do not exist anymore. Fixes #993

Sound Propagation Mode: fixed a problem where removed sector geometry was still shown when undoing/redoing. Fixes #992

Fixed a problem where portal render style could not be set for the Eternity Engine game configuration

Visual Mode: fixed a problem where texture skewing didn't work correctly for textures scaled through sidedef properties. Fixes #985

FORCEINLINE is not a _WIN32 thing
It is a compiler attribute
use always_inline for GCC
__forceinline for MSVC
and plain inline for others

also cast glGetError via void *

clear out warnings for _WIN32 codepath

Build Win32 BuilderNative.dll with Mingw-w64

Script Editor: pressing enter in the search box now performs the search. Pressing enter in the search box of the replace tab performs a search. Pressing enter in the replace box of the replace tab now performs a replacement. Pressing the Escape key now closes the dialog. Fixes #972

Visual Mode: added support for GZDoom style texture skewing

Sound Propagation Mode: fixed a crash when things were outside the map's geometry bounding box. Fixes #975

Edit Linedef dialog (UDMF): fixed a problem where the back sidedef's controls were not disabled correctly if their UDMF fields were not set in the game configuration

Added ability to enable/disable controls in the UDMF map element editing dialogs based on UDMF fields specified in the game configurations (#953)

Visual Mode: the effect of slope things are now only applied if they are specified in the game configuration

Game Configurations: added support for enabling or disabling support for vertex heights in UDMF game configurations

Visual Mode: fixed a problem where flood selection did not work correctly when sidedefs were previously marked by other actions

UDMF type handler: fixed a problem where default values provided as integers for floating point fields failed to convert properly

Visual Mode: fixed a problem where flood selection would operate from all selected surfaces and not just the clicked on one. This behavior can be reverted by enabling the "Use buggy flood select in Visual Mode" option in Preferences -> Editing (#969)

Visual Mode: fixed a problem where flood selection would operate from all selected surfaces and not just the clicked on one. This behavior can be reverted by enabling the "Use buggy flood select in Visual Mode" option in Preferences -> Editing

Fix SOC errors being displayed as Lua errors

Text file parser: fixed a problem where parsing could fail if the file ended with a comment without an trailing newline