[macros] Replace \xspace with \space in library description macros

Author: jensmaurer

source/macros.tex

@@ -222,7 +222,7 @@
 
 %% Library function descriptions
 \newcommand{\Fundescx}[1]{\textit{#1}}
-\newcommand{\Fundesc}[1]{\Fundescx{#1:}\xspace}
+\newcommand{\Fundesc}[1]{\Fundescx{#1:}\space}
 \newcommand{\required}{\Fundesc{Required behavior}}
 \newcommand{\requires}{\Fundesc{Requires}}
 \newcommand{\effects}{\Fundesc{Effects}}
@@ -245,7 +245,7 @@
 \newcommand{\templalias}{\Fundesc{Alias template}}
 
 %% Cross reference
-\newcommand{\xref}{\textsc{See also:}\xspace}
+\newcommand{\xref}{\textsc{See also:}\space}
 
 %% Inline parenthesized reference
 \newcommand{\iref}[1]{\nolinebreak[3] (\ref{#1})}