[LyX/master] Cmake build: Fix use of LYX_ABS_INSTALLED_DATADIR

[Kornel Benko]

commit dd154a5837db1083dfa64eb98038699a8bb49958
Author: Kornel Benko <kornel at lyx.org>
Date:   Tue Apr 14 19:59:41 2020 +0200

    Cmake build: Fix use of LYX_ABS_INSTALLED_DATADIR
    
    (Wrong display at configuration time. Also wrong value in created config.h)
---
 CMakeLists.txt                 |    2 +-
 development/unix/lyxrc.dist.in |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c1d90f7..9410c39 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -575,7 +575,7 @@ if(NOT LYX_DATA_SUBDIR)
 	endif()
 endif()
 
-set(LYX_ABS_INSTALLED_DATADIR "${CMAKE_INSTALL_PREFIX}")
+set(LYX_ABS_INSTALLED_DATADIR "${CMAKE_INSTALL_PREFIX}/${LYX_DATA_SUBDIR}")
 get_locale_destination(LYX_LOCALEDIR)
 set(LYX_ABS_INSTALLED_LOCALEDIR "${CMAKE_INSTALL_PREFIX}/${LYX_LOCALEDIR}")
 set(LYX_ABS_TOP_SRCDIR "${TOP_SRC_DIR}")
diff --git a/development/unix/lyxrc.dist.in b/development/unix/lyxrc.dist.in
index 88e393f..3b10a81 100644
--- a/development/unix/lyxrc.dist.in
+++ b/development/unix/lyxrc.dist.in
@@ -12,5 +12,5 @@
 
 Format 25
 
-\texinputs_prefix ".:@LYX_ABS_INSTALLED_DATADIR@/@LYX_DATA_SUBDIR at tex"
+\texinputs_prefix ".:@LYX_ABS_INSTALLED_DATADIR at tex"