sync code with last improvements from OpenBSD

lib/libX11/man/xkb/XkbAllocGeomProps.man

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+.\" Copyright 1999 Oracle and/or its affiliates. All rights reserved.
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+.TH XkbAllocGeomProps __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
+.SH NAME
+XkbAllocGeomProps \- Allocate geometry properties
+.SH SYNOPSIS
+.HP
+.B Status XkbAllocGeomProps
+.BI "(\^XkbGeometryPtr " "geom" "\^,"
+.BI "int " "num_needed" "\^);"
+.if n .ti +5n
+.if t .ti +.5i
+.SH ARGUMENTS
+.TP
+.I \- geom
+_summary_
+.TP
+.I \- num_needed
+_summary_
+.SH DESCRIPTION
+.LP
+Xkb provides a number of functions to allocate and free subcomponents of a 
+keyboard geometry. Use these functions to create or modify keyboard geometries. 
+Note that these functions merely allocate space for the new element(s), and it 
+is up to you to fill in the values explicitly in your code. These allocation 
+functions increase 
+.I sz_* 
+but never touch 
+.I num_* 
+(unless there is an allocation failure, in which case they reset both 
+.I sz_* 
+and 
+.I num_* 
+to zero). These functions return Success if they succeed, BadAlloc if they are 
+not able to allocate space, or BadValue if a parameter is not as expected.
+
+.I XkbAllocGeomProps 
+allocates space for 
+.I num_needed 
+properties and adds them to the specified geometry 
+.I geom. 
+No initialization of the properties is done. A geometry property associates an 
+arbitrary string with an equally arbitrary name. Geometry properties can be used 
+to provide hints to programs that display images of keyboards, but they are not 
+interpreted by Xkb. No other geometry structures refer to geometry properties.
+.SH DIAGNOSTICS
+.TP 15
+.B BadAlloc
+Unable to allocate storage
+.TP 15
+.B BadValue
+An argument is out of range