integrate new kim_query command into the documentation environment

doc/src/Build_extras.txt

@@ -171,7 +171,9 @@ KIM package :h4,link(kim)
 
 To build with this package, the KIM library must be downloaded and
 built on your system.  It must include the KIM models that you want to
-use with LAMMPS.
+use with LAMMPS. If you want to use the "kim_query"_kim_query.html
+command, you also need to have libcurl installed with the matching
+development headers and the curl-config tool.
 
 Note that in LAMMPS lingo, a KIM model driver is a pair style
 (e.g. EAM or Tersoff).  A KIM model is a pair style for a particular

doc/src/Packages_details.txt

@@ -341,6 +341,8 @@ KIM package :link(PKG-KIM),h4
 A "pair_style kim"_pair_kim.html command which is a wrapper on the
 Knowledge Base for Interatomic Models (KIM) repository of interatomic
 potentials, enabling any of them to be used in LAMMPS simulations.
+Also a "kim_query"_kim_query.html command, which allows to query
+the OpenKIM database for stored properties.
 
 To use this package you must have the KIM library available on your
 system.

doc/src/commands_list.txt

@@ -53,6 +53,7 @@ Commands :h1
    include
    info
    jump
+   kim_query
    kspace_modify
    kspace_style
    label

doc/src/kim_query.txt

@@ -0,0 +1,46 @@
+"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
+
+:link(lws,http://lammps.sandia.gov)
+:link(ld,Manual.html)
+:link(lc,Commands_all.html)
+
+:line
+
+kim_query command :h3
+
+[Syntax:]
+
+kim_query variable query_function web_query_flags :pre
+
+variable = name of a (string style) variable where the result of the query is stored
+query_function = name of the OpenKIM web API query function to be used
+web_query_flags = a series of keyword=value pairs that represent the web query; supported keywords depend on query function :ul
+
+[Examples:]
+
+kim_query latconst get_test_result test=TE_156715955670_004 model=MO_800509458712_001 &
+  prop=structure-cubic-crystal-npt species=\["Al"\] keys=\["a"\] units=\["angstrom"\] :pre
+
+[Description:]
+
+The kim_query command allows to retrieve properties from the OpenKIM
+through a web query. The result is stored in a string style
+"variable"_variable.html, the name of which must be given as the first
+argument of the kim_query command. The second required argument is the
+name of the actual query function (e.g. {get_test_result}). All following
+arguments are parameters handed over to the web query in the format
+{keyword=value}. This list of supported keywords and the type of how
+the value has to be encoded depends on the query function used.
+For more details on this, please refer to the OpenKIM homepage.
+
+[Restrictions:]
+
+This command is part of the KIM package.  It is only enabled if
+LAMMPS was built with that package.  Furthermore, its correct
+functioning is dependend on compiling LAMMPS with libcurl support.
+See the "Build package"_Build_package.html doc page for more info.
+
+[Related commands:]
+
+"pair_style kim"_pair_kim.html, "variable"_variable.html
+

doc/src/lammps.book

@@ -167,6 +167,7 @@ if.html
 include.html
 info.html
 jump.html
+kim_query.html
 label.html
 lattice.html
 log.html

doc/src/pair_kim.txt

@@ -42,12 +42,9 @@ section of the "Packages details"_Packages_details.html doc page has
 instructions on how to do this with a simple make command, when
 building LAMMPS.
 
-See the examples/kim dir for an input script that uses a KIM model (potential)
-for Lennard-Jones.  Note, for this example input script, the example models
-shipped with with kim-api package must be installed.  See the "Build
-package"_Build_package.html section and the ./lib/kim/README for details
-on how to build LAMMSPS with the kim-api and how to install the example models.
-
+See the examples/kim dir for an input script that uses a KIM model
+(potential) for Lennard-Jones.
+ 
 :line
 
 The argument {model} is the name of the KIM model for a specific